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首页> 外文期刊>Journal of Biomechanics >A control theoretic model of the forearm.
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A control theoretic model of the forearm.

机译：前臂的控制理论模型。

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摘要

In this paper, a control theoretic model of the forearm is developed and analyzed, and a computational method for predicting muscle activations necessary to generate specified motions is described. A detailed geometric model of the forearm kinematics, including the carrying angle and models of how the biceps and the supinator tendons wrap around the bones, is used. Also, including a dynamics model, the final model is a system of differential equations where the muscle activations play the role of control signals. Due to the large number of muscles, the problem of finding muscle activations is redundant, and this problem is solved by an optimization procedure. The computed muscle activations for ballistic movements clearly recaptures the triphasic ABC (Activation-Braking-Clamping) pattern. It is also transparent, from the muscle activation patterns, how the muscles cooperate and counteract in order to accomplish desired motions. A comparison with previously reported experimental data is included and the model predictions can be seen to be partially in agreement with the experimental data.
机译：在本文中，前臂的控制理论模型得以开发和分析，并描述了一种预测产生特定运动所必需的肌肉激活的计算方法。使用了前臂运动学的详细几何模型，包括承载角度以及二头肌和旋肌腱如何缠绕骨头的模型。此外，包括动力学模型在内，最终模型是一个微分方程组，其中肌肉的激活起着控制信号的作用。由于大量的肌肉，发现肌肉激活的问题是多余的，并且该问题通过优化程序得以解决。计算出的用于弹道运动的肌肉激活可以清楚地捕捉到三相ABC（激活-制动-夹紧）模式。从肌肉激活模式来看，肌肉如何协作和抵消以完成所需的运动也是透明的。包括与先前报告的实验数据的比较，并且可以看到模型预测与实验数据部分一致。

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